Surprising mod_mcpage finding

Apparently I'll be able to get the patch ready sooner than I expected. I had been experimenting with using localmemcache's C API to store pages in the fast local cache, assuming that it would be faster than using a local instance of memcached running on the server, and that I'd just have to add expiration and LRU removal to localmemcache (not the smallest task, but certainly quite doable). After converting mod_mcpage to use the binary protocol, I got a bit of a speed boost, so that mod_mcpage serves stuff up about as quickly as it lighttpd serves a static file (sometimes a few microseconds faster, sometimes a few microseconds slower).